Common X-ray Tube Failure Analysis
Failure 1: Ua tsis tiav ntawm rotating anode rotor
(1) Phenomenon
① Lub voj voog yog qhov qub, tab sis qhov kev sib hloov ceev poob qis; lub sij hawm tig zoo li qub yog luv; lub anode tsis tig thaum raug;
② Thaum lub sij hawm raug, lub raj tam sim no nce sharply, thiab lub hwj chim fuse yog tshuab; ib qho taw tes ntawm lub hom phiaj anode yog yaj.
(2) Kev tsom xam
Tom qab ua haujlwm ntev, cov kabmob hnav thiab deformation thiab kev hloov pauv yuav tshwm sim, thiab cov qauv molecular ntawm cov khoom lubricant tseem yuav hloov.
Fault 2: Lub hom phiaj anode nto ntawm X-ray raj puas lawm
(1) Phenomenon
① X-ray tso zis poob qis, thiab qhov rhiab heev ntawm X-ray zaj duab xis tsis txaus; ② Raws li cov hlau anode tau evaporated ntawm qhov kub thiab txias, ib txheej hlau nyias tuaj yeem pom ntawm phab ntsa iav;
③ Los ntawm cov iav tsom iav, nws tuaj yeem pom tias lub hom phiaj ntog muaj qhov tawg, tawg thiab yaig, thiab lwm yam.
④ Cov hlau tungsten splashed thaum lub hom phiaj yog melted heev yuav tawg thiab puas lub X-ray raj.
(2) Kev tsom xam
① Kev siv ntau dhau. Muaj ob txoj hauv kev: ib qho yog tias lub overload tiv thaiv Circuit Court tsis overload ib tug raug; lwm yam yog ntau yam exposures, uas ua rau cumulative overload thiab melting thiab evaporation;
② lub rotor ntawm lub rotating anode X-ray raj yog daig los yog qhov pib-up tiv thaiv Circuit Court yog faulty. Tawm thaum lub anode tsis tig los yog kev sib hloov ceev yog tsawg dhau, ua rau instantaneous melting thiab evaporation ntawm lub hom phiaj anode;
③ Tsis zoo cua sov dissipation. Piv txwv li, kev sib cuag ntawm lub dab dej kub thiab lub cev tooj liab anode tsis nyob ze txaus lossis muaj roj ntau dhau.
Fault 3: X-ray raj filament qhib
(1) Phenomenon
① Tsis muaj X-rays raug tsim thaum raug, thiab lub milliamp meter tsis muaj qhov qhia tau;
② Lub filament tsis tau teeb los ntawm lub qhov rais ntawm X-ray raj;
③ Ntsuas cov filament ntawm X-ray raj, thiab tus nqi kuj yog infinite.
(2) Kev tsom xam
① Qhov hluav taws xob ntawm X-ray raj filament yog siab dhau lawm, thiab cov filament tau tawg;
② Lub tshuab nqus tsev kawm ntawv ntawm X-ray raj raug rhuav tshem, thiab huab cua ntau npaum li cas ua rau cov filament oxidize thiab hlawv sai sai tom qab lub zog.
Fault 4: Tsis muaj qhov txhaum tshwm sim los ntawm X-ray hauv kev yees duab
(1) Phenomenon
① Kev yees duab tsis tsim X-rays.
(2) Kev tsom xam
①Yog tias tsis muaj X-ray tsim nyob rau hauv kev yees duab, feem ntau thawj zaug txiav txim seb qhov hluav taws xob siab puas tuaj yeem xa mus rau lub raj ib txwm, thiab txuas ncaj qha rau lub raj.
Tsuas yog ntsuas qhov voltage. Siv Beijing Wandong ua piv txwv. Feem ntau, thawj thiab theem nrab voltage piv ntawm high-voltage transformers yog 3: 1000. Ntawm chav kawm, xyuam xim rau qhov chaw tshwj tseg los ntawm lub tshuab ua ntej. Qhov chaw no feem ntau yog vim muaj kev tiv thaiv sab hauv ntawm cov khoom siv hluav taws xob, autotransformer, thiab lwm yam, thiab qhov poob nce thaum raug, ua rau poob hauv qhov hluav taws xob input, thiab lwm yam. Qhov kev poob no cuam tshuam nrog kev xaiv ntawm mA. Lub load nrhiav kom tau voltage yuav tsum siab dua. Yog li ntawd, nws yog qhov qub thaum qhov ntsuas hluav taws xob ntsuas los ntawm cov neeg ua haujlwm saib xyuas tshaj tus nqi nyob rau hauv qee qhov ntau dua li 3: 1000. Tus nqi tshaj yog cuam tshuam nrog kev xaiv ntawm mA. Qhov ntau dua qhov mA, tus nqi ntau dua. Los ntawm qhov no, nws tuaj yeem txiav txim siab seb puas muaj teeb meem nrog lub high-voltage thawj Circuit Court.
Post lub sij hawm: Aug-05-2022